Kano - Kroil Original Penetrating Oil (AeroKroil)

Kano Laboratories


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Kroil Penatrant - Unseize the Day

Loosen frozen metal parts the professional way with Kroil Original Penetrant in liquid and aerosol (formerly AeroKroil) formulas. Discover why this is the best penetrating oil to loosen bolts in various applications.

When freeing corroded items in challenging spaces, nothing rivals powerful, industry-proven Kroil penetrating oil. Used and trusted by pros and experienced DIYers alike since 1939, Kroil quickly loosens rusted nuts and bolts and frees frozen shafts, pulleys, and more. Thanks to Kroil's ability to penetrate the tiniest opening, thread, or crevice, no space is too tight to reach. Corrosion meets its match, as Kroil removes and prevents rust, cleans and lubricates, and displaces moisture. NEW! NSF Nonfood Compounds Program Listed Category Code: H2 Registration #165745 (8oz and gallons). 50-State VOC Compliant. Made in the U.S.A. (Portions of packaging imported.)




Kroil Industry Applications
  • Attacks Corrosion & Removes Rust and Carbon Deposits
    • Dissolves gum, dried grease, oil, and rust
    • Lubricates, cleans, and prevents rust
    • Expels moisture and protects against corrosion
    • Frees frozen shafts, pulleys, and jammed gears
  • Penetrates Faster
    • Quickly loosens rusted nuts and bolts
  • Works Everywhere
    • Will not attack or damage metal
  • Simplifies Repairs
    • It makes the toughest maintenance jobs easier, faster, and safer to execute
  • Penetrates Deeper
    • Penetrates one-millionth-inch spaces



Kroil Applications


Corrosion, compression, and chemical reactions often cause frozen metal parts to stick together. Short of hitting them with another object, fused metal objects have traditionally been hard to separate. However, with Kano AeroKroil Penetrating Oil, you can save your energy for other projects. It makes its way into the smallest spaces to break the chemical bonds holding two pieces of metal together, whether they're stuck because of thermal variations or electrical relationships.

Kano Kroil Penetrating Oil promptly penetrates so that seized parts move again. Its unique chemical makeup allows it to break down rust, corrosion, and caked-on substances while loosening and lubricating your engine's components. This aerosol can-based oil contains small concentrations of aliphatic alcohol, glycol ether, and trimethyl benzene, so it works hard to break the bonds tough substances create.

Each can of Kano Kroil Aerosol (AeroKroil) Penetrating Oil features a spray nozzle with a long, slender attachment that makes it easy to spray into hard-to-reach areas. It's considered "The Oil That Creeps" because even if you cannot spray it directly on the bond you need to be loosened, AeroKroil makes its way to where it needs to be.


Item Specifications

Size Old Part Number New Part Number UPC
10oz AP KS102 857236004018
13oz KS KS132 857236004025
16.5oz IS KS162 857236004032


15 Gallons are drop shipped direct only

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Customer Reviews

Based on 2 reviews Write a review

Customer Reviews

Based on 2 reviews
Bob Veach
best I found

used this for 50 years

Syd Dunton
Stubborn Bolts

I have a situation where two knives on my portable 12" planner need to be flipped in order to use the other cutting edge. Each of these two blades is held by six bolts for a total of 12 bolts with recessed hex heads. The tool included an attached long-handled Allen wench for the job.

I was able to loosed all but three of the bolts and could not, for the sake of me, loosed those three. I read on line about the best product for lubrication to loosen stuck bolts like my situation and ordered a small can of Kroil Penetrating Oil. I was pleasantly surprised with the smell, and the smooth consistency along with the easy application: it just flowed out.

Sure enough, those three stubborn bolts gradually loosed for me. I recommend this penetrating oil for anyone having a difficult time trying to remove bolts as I did. Even though my planner is kept indoors and showed no signs of rusting, I'm sure Kroil will work even on rusted hardware!